Dynamo-electric machine.



J. P. FEBNEY.

DYNAMO ELECTRIC MACHINE.

APPLIUATION FILED APE. 6,1908

Patented July19,1910.

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O O O O O O O O INVENTEIR.

JOSEPH E FEENEY- WiTN E515 E511 ita- ATT'Y J. P. FEENBY.

DYNAMO ELEGTRIG MACHINE.

APPLICATION FILED APR. 6, 1908.

Patented July 19, 1910.

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iNVEN-TUR JEIEEFH F. FEE N m UNITE STATiTQ JOSEPH I. FEENEY, 6F SCI-IENECTAD-Y, NEJV YORK, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A COBPQRATION 0F NEVJ YORK.

DYNAMO-ELECTRIC MACHINE.

To all whom it may concern:

Be it known that I, J osnrn P. FEENEY, a citizen of the United States, residing at Schenectady, county of Schenectady, State of New York, have invented certain new and useful Improvements in Dynamo-Electric Machines, of which the following is a specification.

My invention relates to dynamo-electric machines and more particularly to means for supporting the end turns or connections which extend beyond the cores of the rotors of such machines, and has for its object a simple arrangement whereby such end turns may be rigidly secured in place against the action of centrifugal force and at the same time are well ventilated.

leretofore in constructing the supports for end turns of the rotors of high speed dynamo-electric machines it has been found necessary to hold the end turns between plates or rings of metal. These rings form pockets preventing circulation of air past the coils so that the heat generated in the coils is retained. 3y employing supports according to my invention the end turns are etliciently ventilated and no such pockets are formed. To this end, I provide a plurality of members for each of said end turns arranged in a row, each having one or more overhanging portions, each of said overhanging portions engaging the exterior surface of a single end turn, and a single stem portion which passes between the coils, these members being suitably spaced apart and securely held in place against centrifugal force.

Other features of novelty which characterize my ini'ention are pointed out with particularity in the claims annexed to and forming a part of this specification. For a better understanding of my invention, however, reference may be had to the following description taken in connection with the accompanying drawing, in which Figure 1 is a perspective view of a rotor of a dynamo-electric machine embodying my invention with some of the'parts removed and cut away; Fig. 2 is a plan view of the end turns; Fig. 3 is a section on the line of Fig. 2; Fig. 4 is an elevation showing the supporting means for the outside end turns, and Fig. 5 is a sectional view of a modification. I

The spider l is mounted upon the shaft 2 Specification of Letters Patent.

Application filed April 6, 1908.

Patented July 19, 1910'.

Serial No. 425,395.

and supports the laminations 3. The coils 4: are embedded in slots in the laminations and have the end turns or connections 5. These parts may assume any usual or preferred form.

Referring particularly to Figs. 1 to 4 inelusive 6 is a member upon which theend turns are supported. The ring member 6' has a flanged portion 7 which is supported in any suitable manner and preferably is riveted to the laminetions by means of rivets 8. The outer end of this member 6 is upturned to form a flange 9 which protects the end turns from injury. This flange 9 however, may be dispensed with each 0 the supporting members 10, 11 and 12 have one or more overhanging portions each of which portions engages the exterior surface of a single end turn or connection of the coils, and a single threaded stem portion which extends through the member 6. The supporting members for each end turn are arranged in a row. Bolts 13 hold these members in place and clamp the end connections against the ring member 6. The members 10, 11 and 12 are suitably spaced apart. The overhanging portions of the member 10 engage the exterior surfaces of two adjacent coils, and consequently these members are T-shaped. The members 11 engage the corners 14 of each end turn. The members 12 are L-shape the overhanging portions of which engage the extreme outer and inner end turns. Holes 15 are provided in the flanged member 6 for the purpose of ventilation.

In theinodification shown in Fig. 5, the end member 16 carries arms 17' upon which are mounted rings 18 having flanged portions 19. 'llhe-armsil'l and rings 18 are keyed together by means of keys 19 to prevent the rings 18 from rotating relative to the arms. Each of the members 10, 11' and 12, similar to the members 10, 11 and 12, have one or more overhanging portions each of which portions engages the exterior surface of a single turn of the coils. These members have flanged portions 20, which interlock with the flanged portions 19 on the rings, and are held in place thereby, clamping the end turns against the rings 18. Dowel pins 21 may be provided to properly space the supporting members apart and to. keep them "from moving when properly spaced. By thus spacing apart the supportmembers and the rings 18 and thereby keep ',thereon, are, to all intents and purposes, the

shown in by Letters Patent of the United States, is,

for each of said end turns comprising a thereto, coils therefor having end turns or ing means provided so that air may pass between these the end turns cool. An end ring 22 provided. with ventilating holes 23 is fastened to the arms 17 by means of bolts 24. This end ring presses against the members 12, which engage the outer end turns, and thereby holds the entire supporting means rigidly in place. In this construction the end member 16, the arms 17 and rings 18 mounted same as the single flanged ring member 6 Figs, 1 to a inclusive.

5: desire it to be understood that my invention is not limited to the particular construction shown-rigid described, and I aim in the appended claims to-cover all modifications invention.

What I claim as new, and desire to secure 1. In a dynamo electric machine, a rotatable member, C(JllS therefor having end turns or connections, and supporting means plurality of members arranged in a row, each of said members having one or more flanged portions, each of said flanged portions engaging the exterior surface of a single end turn, and a single stem portion passing between the end turns, said members being spaced apart, and means for holding said members in place against centrifugal force.

2. in a" dynamo eleotrio machine, a rotatable member, a ring member fastened connections supported on said ring member, and means for holding each of sand end turns in place agamst centrifugal force comfor the end turns, passages are i more flanged portions, each of said flanged prising a plurality of members arranged in a row, each of said members having one or portions engaging the exterior surface of a single end turn, and a single stem portion passing between the end turns, said members being spaced apart, and means for fastening said stem portions to said ring memher.

3. In a dynamo electric machine, a retatable member, a ring member havingventilating passages therein and a flange, means for fastening said flange to said rotatable member, coilshaving end turns or connections supported on said ring member, and means for holding each of said end turns in place against centrifugal force comprising a plurality of members arranged in a row, each of said members having a flanged portion, each of said flanged portions engaging the exterior surface of a single end turn, and a single stem portion passing between the end turns and fastened to said ring member, said members being spaced apart.

4:. In a dynamo electric machine, a r0.- tatable member, coils therefor having end turns or connections, a support for said end turns, and means for holding each of said end turns in place against centrifugal force comprising a plurality of members arranged in a row, each of said members hav ing one or more flanged portions, each of said flanged portions engaging the exterior surface of a single end turn, and a single stem portion passing between the end turns and secured to said support, said members being spaced apart about said support.

In witness whereof i have hereunto set my hand this 2nd day of April 1908.

JOSEPH P. FEENEY. WVitnesses EDWIN L. R1011, HELEN Onrono. 

